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Mark Zuckerberg has clicked "Like" on the Keystone XL Pipeline -- and now his timeline is going to be chock-full of angry. Scott Budman reports. (Published Wednesday, May 1, 2013)

Updated at 7:32 PM CST on Wednesday, May 1, 2013

Mark Zuckerberg has clicked "Like" on the Keystone XL Pipeline — and now his timeline is going to be chock-full of angry.

The Facebook founder and CEO recently started a political advocacy group called FWD.us — and the group is running a series of television ads in support of the controversial Keystone XL Pipeline and drilling in the Arctic National Wildlife Refuge.

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His PAC was created to support immigration reform, but it is also going to support such things as drilling. There are those in Congress who support immigration reform, but who also support drilling, and some say that the PAC funding might be a means to an end.

Feared and loathed by environmentalists, the pipeline would open up Canadian tar sands for oil and gas exploration.

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Activists in the San Francisco Bay Area say they are "angered and mystified" over Zuck's turn for the pipe, and a group of about 50 protested Wednesday at Facebook's world headquarters in Menlo Park, Calif. The protest was timed just before the company released its first-quarter earnings. . Wednesday is also "May Day," a day where many took up immigrants' rights and a path to citizenship as the key causes of the day.

The protesters questioned why Zuckerberg would "spend millions in support" of the pipeline, "among the dirtiest projects on Earth."